Unbalance Vibration Control System of Bearingless Asynchronous Motor

An asynchronous motor, vibration control technology, applied in the control system, vector control system, motor generator control and other directions, can solve problems such as unbalance
CN104660136BInactive Publication Date: 2017-05-10HENAN UNIV OF SCI & TECH
2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HENAN UNIV OF SCI & TECH
Publication Date
2017-05-10
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides an unbalance vibration control system of a bearingless asynchronous motor. The system consists of a directional inverse decoupling control system of a rotor flux linkage of the bearingless asynchronous motor and an unbalance exciting force feedforward compensation system, wherein the directional inverse decoupling control system of the rotor flux linkage of the bearingless asynchronous motor comprises an original system, an inverse system and four adjustors and realizes dynamic decoupling control of an electromagnetic torque, the rotor flux linkage and a random displacement component; the unbalance exciting force feedforward compensation system comprises an LMS self-adapted filter unbalance exciting force compensator and a force / flow conversion module and dynamically adjusts the unbalance displacement extraction speed and precision by using a simple step-length factor adjusting function; output of the feedforward compensation system and a steady random displacement current output by the inverse system are overlaid to form a magnetic suspension dynamic decoupling control system. The system provided by the invention cancels the links of online identification of a predictable load torque in the inverse system and a closed loop of a stator current of the original system, so that the influence of the unbalance exciting force can be effectively inhibited and the control precision and performance are improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field

[0001] The invention relates to the technical field of AC motor drive and control, and is especially suitable for high-performance dynamic decoupling control of a bearingless asynchronous motor, and is a bearingless asynchronous motor unbalanced vibration control system with strong vibration suppression effect. Background technique

[0002] The bearingless motor is a new type of motor suitable for high-speed operation developed in recent years. It has a wide range of application prospects in aerospace, material sealing transmission, advanced manufacturing and other fields. As a rotating drive motor, a bearingless motor will inevitably have a certain degree of rotor mass eccentricity due to uneven materials, machining accuracy, assembly errors and other reasons. When rotating, it will generate centrifugal excitation force at the same frequency as the rotation speed, resulting in rotor failure. Balance vibration or radial displacement fluctuations affect the suspens...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More